[FraaJad]

There are two things here:

1. "unfamiliar" syntax. Well... It is unfamiliar if your first exposure to programming stopped at Java. Guess what .. pattern matching is quite an old convention in programming languages old (Prolog, Erlang, ML, Haskell)... and new (Rust, Swift)..

2. Standard libraries are a crap shoot... cruft accumulates in standard libraries just like any piece of software but harder to clean up owing to demands of backward compatibility. Just go and look at Python standard library. Even on a superficial level, the stdlib is a mix of CamelCase and under_score .. which can be irritating.

OCaml is not unique in this regard.